So, that's a homogeneous system, one phase. You have to know if your system is an equilibrium system or not.

所以这是个均匀系统，只有一个相，你得知道你的系统,是不是个平衡系统。

麻省理工公开课 - 热力学与动力学课程节选

It's a comedy that you only get once you performed and once you know what's happening, and

这种喜剧只有你自己明白，只有你自己知道发生了什么，

街头表演很有趣 - SpeakingMax英语口语达人

But, as you know, air is only 20% oxygen, the balance being nitrogen.

但是你知道空气中只有20%的是氧气，大部分的是氮气。

麻省理工公开课 - 固态化学导论课程节选

How do we explain the fact that the person who's conducting the seance knows things about, your history that only your dead uncle would know?"

我们怎么解释通灵的那个人,好像真的知道,只有你死去的叔叔才知道的故事

耶鲁公开课 - 死亡课程节选

They won't make money. You see, he set it two dollars for the public.

对，你知道，电影票只有两美元。

麻省理工公开课 - 电影哲学课程节选

That's the only time you're going to find out.

只有这个时候你才知道自己是否真正理解了

耶鲁公开课 - 基础物理课程节选